Abstract
Temozolomide (TMZ) is an alkylating drug used usually in glioma treatment by inducing the apoptosis in glioma cell. The aim of the study is to investigate the anticancer mechanism of TMZ in SH-SY5Y human neuroblastoma cell line. Cytotoxic effects of TMZ were determined by using XTT assay. IC50 doses in the SH-SY5Y were detected as 5 mM. Expression profiles of novel genes URG4/URGCP, CCND1, CCND2, CDK4, and BCL2 were determined by real-time PCR. The apoptotic effects of TMZ were evaluated with TUNEL method. Furthermore, effects of TMZ on colony formation and invasion were investigated in this study. It was observed that TMZ in SH-SY5Y cell line caused a significant decrease in the gene expressions of URG4/URGCP, CCND1, CCND2, CDK4, and BCL2. According to TUNEL assay results, TMZ markedly induced apoptosis in SH-SY5Y cell line. It was found that TMZ in SH-SY5Y cell line suppressed invasion and colony formation using matrigel invasion chamber and colony formation assay, respectively. To conclude, it is thought that TMZ demonstrates anticarcinogenesis activity by affecting cell cycle arrest, apoptosis, invasion, and colony formation on SH-SY5Y cells. TMZ may be an effective agent for treatment of neuroblastoma as a single or in combination with other drugs.
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